The Marble Salesman

By in Sonya’s challenges

Help Sonya choose the bin with the right marbles. Are you ready to take up the challenge?

Sonya faces a shady marble salesman. Only one of the bins contains real marbles. But which one?  Sonya can weigh the marbles only once, and she knows that real marbles weight 0.99g, whereas fake ones weight 1.00g. Help her!

According to you, how Sonya can proceed to find which one of the bins contains real marbles?

Did you find out how? No? Here is a hint ?

You can place more than one marble from each bin on the scale.


Check if your solution is the good one by testing it directly on Netmath where you can manipulate the marbles:



Did you have fun? Find more puzzles to solve on Netmath!